Submission #1171815

#	Time	Username	Problem	Language	Result	Execution time	Memory
1171815		julia_08	Hacker (BOI15_hac)	C++20	40 / 100	1092 ms	2800 KiB

hac

#include <bits/stdc++.h>
#define int long long

using namespace std;

const int MAXN = 5e5 + 10;

int v[MAXN];

int32_t main(){
  cin.tie(0)->sync_with_stdio(0);

  int n; cin >> n;

  int tot_sum = 0;

  for(int i=1; i<=n; i++){
    cin >> v[i];
    tot_sum += v[i];
  }

  int ans = -1e9;

  for(int i=1; i<=n; i++){

    // brutando primeira pos

    vector<int> a;

    for(int j=i+1; j<=n; j++) a.push_back(v[j]);
    for(int j=1; j<i; j++) a.push_back(v[j]);

    int max_sum = 0, cur_sum = 0;

    for(int i=0; i<n/2; i++) cur_sum += a[i];

    max_sum = cur_sum;

    for(int i=1; i<=(n + 1) / 2; i++){
      cur_sum -= a[i - 1];
      cur_sum += a[i + n / 2 - 1];
      max_sum = max(max_sum, cur_sum);
    }

    ans = max(ans, tot_sum - max_sum);

  }

  cout << ans << "\n";

  return 0;
}

• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 40